# HG changeset patch
# User Jim Hague <jim.hague@acm.org>
# Date 2007-10-23 10:39:24
# Node ID f84bb2e1cc3a37070ffbb6852af329e068d91bdb
# Parent  78a6b985882f4221f9a7a05744bbdb95eb5aeaec

fix calloc(0, ...) issue

diff --git a/mercurial/bdiff.c b/mercurial/bdiff.c
--- a/mercurial/bdiff.c
+++ b/mercurial/bdiff.c
@@ -245,7 +245,7 @@ static struct hunklist diff(struct line 
 
 	/* allocate and fill arrays */
 	t = equatelines(a, an, b, bn);
-	pos = (struct pos *)calloc(bn, sizeof(struct pos));
+	pos = (struct pos *)calloc(bn ? bn : 1, sizeof(struct pos));
 	/* we can't have more matches than lines in the shorter file */
 	l.head = l.base = (struct hunk *)malloc(sizeof(struct hunk) *
 	                                        ((an<bn ? an:bn) + 1));